from Extest import fac, doppel

print(f'fac(5) = {fac(5)}')
print(f'fac(9) = {fac(9)}')

print(f'doppel("abcdef") = {doppel("abcdef")}')
print(f'''doppel("Madam, I'm Adam.") = {doppel("Madam, I'm Adam.")}''')
